Allow the use of synthetic colorants in China 10. Natural plant colouring coloring agent, and not just security. And many of these natural coloring agents have some nutritive value and physiological activity. As a widely used juice of β-carotene, colorants, vitamin a is not only the original, also have a significant antioxidant, anti-aging and health features, GB2760-2011 its inclusion in various types of production requires use of food additives in foods. Used for food coloring red monascus pigments also has the obvious effect of lowering blood pressure. With the improvement of people's awareness of food additive safety, developing natural, nutritious, versatile natural colorant coloring agent development direction